How can PHP developers troubleshoot session-related problems in their code?

Session-related problems in PHP code can be troubleshooted by checking if the session is started at the beginning of the script, ensuring proper session variable initialization, and verifying session data persistence. Additionally, developers can use session debugging tools like session_id() and session_status() to track session behavior. 

// Check if the session is started at the beginning of the script
if (session_status() == PHP_SESSION_NONE) {
    session_start();
}

// Ensure proper session variable initialization
if (!isset($_SESSION['user'])) {
    $_SESSION['user'] = 'Guest';
}

// Verify session data persistence
$_SESSION['last_activity'] = time();

Keywords

session_start $_SESSION session_destroy session_regenerate_id session_set_save_handler

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